Engine.



V. L.-CAPWELL.

ENGINE.

APPLICATION FILED 0GT.29, 1913.

1,117,974, Patented NOV.'24,1914.

2 SHEETS-SHEET l.

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Witnesses Zf fiw w fivenmr Attorneys THE NORRIS PETERS CO., WASHINGTON,D. C.

V. L. CAPWELL.

ENGINE.

APPLICATION FILED OGT.29, 1913.

1, 1 1 7,974. Patented Nov. 24, 1914.

2 SHEETSSHBET 2.

Witnesses V6, flflventor I Attorneys THE NORRIS PETERS CO-. WASHINGTON,D. (Iv I VERNON LAKE CAPWELL, 0F DORRANCETON, .PENNSYLV'ANIA.

ENGINE.

Specification of Letters Patent. Patented Nov, 24, 1914.

Application filed October 29, 1913. Serial No. 798,129.

To all whom it may concern Be it known that I, VERNON L. CAPWELL, acitizen of the United States, residing at Dorranceton, in the county ofLuzerne and State of Pennsylvania, have invented a new and usefulEngine, of which the following is a specification.

The present invention relates to improvements in engines, one object ofthe invention being the provision of a novel oscillatory reversible.valve mechanism for a reciprocatorytype of steam engine, said valvebeing so constructed and. arranged, as to be oscillated in timedrelation to the piston to control the intake and exhaust of the pressurefluid to and from the power cylinder.

A further object of the present invention, is the novel construction ofan oscillatory valve, and reversing member therefor, said members beingconstructed to telescope with the operating stems disposed in oppositedirections and so arranged that the normal. supply and exhaust chambersfrom the power cylinder remain the same at all times. A still furtherobject of the invention is the provisionof an engine of this typeprovided with two oscillatory valves, the intake and exhaust chambersleading to and from the valves being superposed so that the naturaldrain of condensation will be entirely through the exhaust chamber andoutlet, said valves being so arranged that regardless of the movementof. the piston, the

two chambers remain at all time respectively, the supply and exhaust forthe engine.

A still further object of the present invention, is the provision of anactuating valve provided with a horizontal partition, whereby theexhaust steam is prevented from entering the live steam chamber.

A still further object of the invention is the provision of a novel formof reversing valve, which is provided with air ports that produce aventilating means for the engine when the engine is running empty.

XVith the foregoing and other objects in view which will appear as thedescription proceeds, the invention resides in the combination andarrangements of parts and in the details of construction hereinafterdescribed and claimed, it being understood that changes in the preciseembodiment of the invention herein disclosed can be made within thescope of what is claimed with- I valves.

out departing from the spirit of the invention.

In the drawings-Figure 1 is a section.

taken on line 11 of Fig. 2. Fig. 2 is a section taken on line 5+5 ofFig. 1. Fig. 3 is a plan view of one of the actuating Fig. 4 is asection taken "on line 17 of Fig. Fig. 5' is a section taken on line 8+8of Fig. 3. Fig-'6 is a view similar to Fig. 3 of the reverse valve. Fig.7 is a section taken on line 10-10 of Fig. 6. Fig. 8 is a section takenon line 1111 of Fig. 6.

Referring to the drawings, the numeral 1 designates the power cylinderwhich is mounted as usual and having disposed therein for reciprocation,the power piston 5 Which is connected to the cross head throughthemedium of the piston rod 6.

' The power cylinder at is provided with the two heads 77, each of whichis cored as at 88 and provided with a plurality of ports 9,-said portsbeing of relatively large diameter and separated or spaced, as shown inFig. 2, so as to present the greatest possible effective jets of thepressure fluid upon the faceof'the-piston 5.

The steam chest C of the engine, has the intake or supply conduit 10 ledinto one side thereof into the supply chamber 11, which is separated bythe horizontally disposedpartition 12-from the lower exhaust chamber13provided with the exhaust connection 14. Thus it will be seen that theexhaust chamber being at the lowest point of the'chest C, willreceive'the draining from the condensation and thus will insure theproper drainage of the engine at all times.

The steam chest is provided with the transversely disposed supply ports1515 which lead from the chamber 11 into the transversely disposedcylindrical bores 16-16 which are open at their ends and thus permit ofthe proper introduction therewithin of the reversing and actuatingvalves, to be described presently.

The channels 17l7 are led from the respective cylindrical bores 1616into the lower end of the cored portions 8-8 of the head, and thusprovide the means whereby the pressure fluid is conducted to and. re

lieved from the power cylinder to produce The reversing valve 18, therebeing two in the present structure, is insertible through one end of itsrespective bore 16l6f, and has attached at its sealed head, an operatingstem 19, the disk 20 being connected thereto by any well known means,while the cap 22 carrying the stufling box also provides an air space orchamber 21 adjacent the head of the valve 18 and the adjacent portion ofthe stem 19, thus insuring the proper cooling of the valve at thispoint. This valve is divided centrally and one portion around thepartition is provided with three ports 23 and the other portion isprovided with four ports 24 and the lubricating or air directing ports25. The ports 23 are formed in quartering relation to each other, theopposite sides of the central port being blank, while the ports 2% aredisposed in quartering relation with the ports 25 at diametricallyopposite points relative to each other.

Disposed to oscillate within and be telescoped by its respectivereversing valve 18 and insertible through the open end of the valve 18and the opposite end of its respective bores 16-46 or the steam chest(J, is the actuating valve 26, the same being divided centrally by meansof the partition 27 into two chambers, each of said chambers beingfurther divided by means of the curved deflecting plates 28-28 so as toconstitute an intake and exhaust chamber in each one of the respectiveends of the valve. The intake compartment of the valve 26 is providedwith the two ports 29-29, which are disposed to be alined with the endsof the respective channels 15 and 17 or 15 and 17 so that the pressurefluid will be admitted from the chamber 11 through the port 29 into thechamber of the valve and finally through the port '29 to the desired endoi the power cylinder. As shown in Fig. 1, the pressure fluid followsthe course of the arrows, and being admitted from the cored chamber 8and the ports 9 will move the piston from right to left. The exhaustchamber of the valve is provided with the respective ports 30-80 whichare disposed to form communication between one of the channels 171'7 andthe respective ports 18 leading into the exhaust chamber 13.

'lhe sealed end of the valve 26 has attached thereto, the disk 33 of thestem 31, said stem 31 being disposed through the stuliing box carryingcasing 32 which pro vides the air chamber 34:, similar to the chamber 21at the opposite end, thus providing means for maintaining the stem andsealed end of the valve 26 cool.

In order to permit of the proper operation of the present engine, and tocontrol the distance of oscillation and the position of the respectivecontrolling valves, the two stems 31 of the actuating valves are eachprovided with the crank (not shown). By this means,

the two valves are operated as usual from the cross head (not shown).

It is apparent that the lubricant may be supplied with the steam in theordinary manner, but by drawing lubricant through the channel 50, to therespective valve there is no carbonizing of the lubricant and thereforethe contacting surfaces of the valves remain smooth and are properlylubricated at all times.

From the foregoing description, it is evident that with the controllingand reverse valves arranged as herein shown, that steam is economizedand that the respective sealed ends of the valves as clearly shown inFig. 2, are properly cooled due to the air chambers '21. and 34:, andthat by reason of the arrangement of the respective chambers 11 and 13,the drain due to condensation and other reasons .both when the engine isrunning and at a standstill, will be by gravity and into the exhaustchamber 13. By this form of valve, it will also be seen, that the intakechamber 11 remains "at all time the intake chamber regardless of theposition of the reversing valve 18 and that therefore the chambers arenot interchanged as is the cus tom in the usual oscillatory andreciprocatory valves.

The ports 29 29, there being four to ach valve 26, are so arranged as tonot interfere with the admission of the pressure fluid, the same beingpositioned, as clearly shown in Figs. l and 5, so that while one side isforming communication with the desired end of the cylinder, the ports atthe opposite side of the valve are closed.

. What is claimed is:

1. An engine, the steam chest of which is provided with superposed inletand exhaust chambers and two transversely disposed valve compartments,said inlet and exhaust chambers beingin communication with said. valvecompartments, two controlling valves, one mounted in each valvecompartment, each one of said valves being a hollow cylindrical memberhaving a longitudinal partition forming an inlet and an exhaust chamberin the valve, said steam chest being provided with channels leading fromthe valve compartments to supply pressure fluid to the power cylinder,means for simultaneously oscillating the two valves to alternately shiftthe relative positions oithe inlet and exhaust chambers of the valves,and two reversing valves one to each controlling valve for regulatingthe direction of the pressure fluid.

2. An engine, the steam chest of which is provided with superposed inletand exhaust chambers and two transversely disposed valve compartments,the inlet and exhaust chambers being in communication with said valvecompartments, two controlling valves, one mounted in each valvecompartment, each one of said valves being a hollow cylindrical memberhaving a longitudinal partition forming an inlet and an exhaust chamberin the valve, said steam chest being provided withchannels leading fromthe valve compartment to supply pressure fluid to the power cylinder,means for simultaneously oscillating the two valves to alternately shiftthe relative positions of the inlet and exhaust chambers of the valves,two reversing valves one to each controlling valve for regulating thedirection of the pressure fluid, and means for controlling both oi thereversing valves in unison.

3. An engine, including a power cylinder, a steam chest provided withsuperposed inlet and exhaust chambers and two transversely disposedcylindrical valve receiving bores, said chest being further providedwith two ports leading from the inlet chamber to the respective valvereceiving bores and two ports leading from said bores to the respectiveends of the power cylinder, two tubular controlling valves insertibleinto the respective transverse bores 01" the steam chest foroscillation, each of said valves being provided with intake and exhaustports causing communication between the inlet chamber and the end of thepower cylinder, and with the respective ends of the power cylinder andthe exhaust chamber, and two reversing valves mounted exterior-1y ofeach controlling valve, and provided with ports for regulating theadmission of pressure fluid to the controlling valves.

4. An engine, including a power cylinder, a steam chest provided-withsuperposed inlet and exhaust chambers and two transversely disposedcylindrical valve receiving bores, said chest being further providedwith two ports leading from the inlet chamber to the respective valvereceiving bores and two ports leading from said bores to the respectiveends of the power cylinder, two tubular controlling valves insertibleinto the respective transverse bores of the steam chest for oscillation,each of said valves being provided with a longitudinal partitiondividing the same into an inlet and an exhaust chamber, and each of saidchambers being provided with two ports, the ports of the inlet chamberbeing disposed for registration with the ports leading from the inletchamber of the steam chest to the channel leading to the end of thepower cylinder while the ports of the exhaust chamber are disposed forregistration with the and two reversing valves, one mounted exteriorlyof each controlling valve, and provided with ports for regulating theadmission of pressure fluid to the controlling valves.

5. An engine, including a power cylinder, a steam chest provided withsuperposed inlet and exhaust chambers and two transversely disposedcylindrical valve receiving bores, said chest being further providedwith two ports leading from the inlet chamber to the respective valvereceiving bores and two ports leading from said bores to the respectiveends of the power cylinder, two tubular controlling valves insertibleinto the respective transverse bores of the steam chest for oscillation,each of said valves be ing provided with intake and exhaust portscausing communication between the inlet chamber and the end of the powercylinder, and with the respective ends of the power cylinder and theexhaust chamber, and two reversing valves mounted exteriorly of eachcontrolling valve, for regulating the admission of pressure fluidthrough the controlling valves, said reversing valves each beingprovided with additional ports of lesser diameter than the controllingports, said ports forming air admitting means to ventilate the engineand provided with ports when pressure fluid is not being admitted 1hollow cylindrical members fitting telescopically with relation to eachother and insertible through opposite ends of the bore and constitutingcontrolling and reversing valves for the steam chest, an operating stemcarried by each valve one stem upon each side of the steam chest, andtwo caps, one cap secured to each side of the steam chest andsurrounding the stem to provide an air space adjacent the head of itsrespective valve and the stem.

In testimony that I claim the foregoing as my own, I have hereto aflixedmy signature in the presenec of two witnesses.

VERNON LAKE CAPWELL. Witnesses:

R. B. ALEXANDE J. W. lVILLiAMS.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents.

Washington, D. C.

